The Role of Biomedical Engineers in the Design and Manufacture of Customized Orthodontic Appliances

2013 ◽  
pp. 366-379
Author(s):  
William A Brantley ◽  
Theodor Eliades
Keyword(s):  
Orthodontic Appliances ◽  
Design And Manufacture

scholarly journals Oxidative Stress Levels in Orthodontic Patients and Efficacy of Antioxidant Supplements in Combating Its Effects- A Randomized Clinical Study

2019 ◽  
Vol 9 (2) ◽  
pp. 29-34
Author(s):  
Sheetal Yamyar ◽  
Suchita Daokar
Keyword(s):  
Oxidative Stress ◽  
Free Radicals ◽  
Orthodontic Appliances ◽  
Randomized Clinical Study ◽  
Gingival Health ◽  
Orthodontic Patients ◽  
Group A ◽  
Antioxidant Supplements ◽  
Group B

Introduction: Orthodontic appliances are considered to be biocompatible although adverse effects attributed to release of nickel ion which are free radicals in oral cavity. These free radical produce damages both in cellular and extracellular components phospholipid membrane, proteins, mitochondrial and nuclear DNA leading to Oxidative stress which is normally counter balanced by the action antioxidant mechanisms. However in higher concentrations of free radicals resulting in cellular death and apoptosis Orthodontic appliances such as brackets, wire, resins has considered as potential allergen leading to release of free radicals. The study was conducted to determine and compare the role of oxidative stress and role of antioxidants in saliva of patients undergoing fixed orthodontic appliances therapy at different time intervals. Materials & Method: A double-blinded, parallel, randomized clinical study was designed consisting of 40 healthy participants, aged 15-30yrs. The samples were divided into two groups Group A without antioxidants supplements and Group B with antioxidants supplements. Salivary MDA levels and gingival health index was recorded at different time intervals from each group. Salivary Lipid peroxidation (Malondialdehyde) level was estimated using Thiobarbituric acid (TBA) method and gingival status was investigated using Silness & Loe gingival index. Intragroup and intergroup comparison was statistically analyzed using student’s paired T test. Result: Increased salivary MDA levels and mild to moderate amount of gingivitis is seen in both groups. This is more pronounced after 24 hours of appliance placement. Improvement in salivary MDA levels and gingival health status is observed during the course of treatment, In Group B the salivary MDA levels and gingival health index score reached below their pretreatment values. However even after a span of 3 months the levels remained higher to their base values in Group A. Conclusion: Improvement in salivary MDA levels and gingival health status is observed following antioxidant therapy during course of treatment, indicating combating nature of antioxidant supplements in orthodontic patients.

Simulation about Bionic Push of Amphibious Vehicle

2011 ◽  
Vol 48-49 ◽  
pp. 1057-1060
Author(s):  
Zhi Sheng Jing ◽  
Yun Liu ◽  
Shan Chao Tu ◽  
Feng Li ◽  
Guo Wei Qin
Keyword(s):  
Wing Disc ◽  
Travel Agency ◽  
Reciprocating Motion ◽  
Forward Movement ◽  
Propulsive Efficiency ◽  
Straight Line ◽  
Biological Methods ◽  
Design And Manufacture ◽  
Bionic Propulsion

The traditional method of propulsion of Amphibious vehicles in water has tracked the water, propeller and waterjet propulsion. But the propulsive efficiency is very low, the maximum not more than 30%. Biological methods used to promote, through the million years of evolution, its power utilization of the highest, the best way. Bionic propulsion system designed in this paper consists of two umbrella-shaped wing plate in the large travel agency travel back and forth, driven by a straight line, Carried out along the longitudinal reciprocating motion of vehicles in the water under the influence of backward movement of the wing disk automatically open, resulting in tension on the vehicle forward, Forward movement of the wing disc automatically shut down to reduce the flow resistance. In this way, amphibious vehicles, with the wing disc back and forth movement, has been the role of forward traction, so that forward movement of vehicle. In this paper, the same wing disc, wing disc at different angles, different velocity simulation of the situation. Come forward to promote strength and speed, angle of the curve. To promote the device provides the basis for the physical design and manufacture.

The role of in vitro diagnostic companies in reducing laboratory error

2007 ◽  
Vol 45 (6) ◽  
Author(s):  
Ana K. Stankovic ◽  
Peter Romeo
Keyword(s):  
Product Life Cycle ◽  
Blood Collection ◽  
Laboratory Errors ◽  
Laboratory Error ◽  
Collection Tube ◽  
In Vitro Diagnostic ◽  
Design And Manufacture ◽  
Model Device

AbstractLaboratory errors have a significant impact on patient safety. The manufacturers of in vitro diagnostic (IVD) products play an important role in the reduction of laboratory errors by ensuring the highest possible safety and efficacy of their products. In order to achieve this, the IVD industry has implemented rigorous product development and manufacturing processes. Many IVD companies apply Six Sigma principles in order to minimize variability within the whole product life cycle, starting with customer requirements, through product design and manufacture, as well as management of the potential issues that occur after the products have been released for use. A closer look into this process is presented here, using an evacuated blood collection tube as a model device.Clin Chem Lab Med 2007;45:781–8.

scholarly journals The Impact of General Self-efficacy and the Severity of Malocclusion on Acceptance of Removable Orthodontic Appliances in 10- to 12-year-old Patients

2020 ◽  
Author(s):  
Navid Naseri ◽  
Tahereh Baherimoghadam ◽  
Niloofar Bassagh ◽  
Shahram Hamedani ◽  
Elmira Bassagh ◽  
...  
Keyword(s):  
Self Efficacy ◽  
Orthodontic Treatment ◽  
Self Report ◽  
Orthodontic Appliances ◽  
Old Patients ◽  
Removable Orthodontic Appliances ◽  
The Impact ◽  
General Self Efficacy ◽  
Patients Acceptance

Abstract Background: The patients’ acceptance of a treatment plan and their subsequent cooperation play a crucial role in achieving the best results in orthodontic treatments. Evidences show some personality traits such as general self-efficacy (GSE) and some dental traits such as severity of malocclusion are correlated with motivation of orthodontic treatment. These factors may predict the patients’ compliance and acceptance in using removable orthodontic appliances. This cross sectional study was conducted to assess the correlation of GSE and the severity of malocclusion with patients’ acceptance in using removable orthodontic appliances. Methods: This study recruited 50 patients aged 10-12 years who required removable orthodontic appliances. The severity of malocclusion was determined using the index of orthodontic treatment need (IOTN) before the onset of treatment and GSE of participants were assessed using GSE scale self-report. The acceptance questionnaire was proposed to the patients on first (T1), third (T2), and sixth (T3) month after the delivery of the appliance. Results: The GSE score had a statistically significant correlation with the total score of the acceptance questionnaire, subscale score of satisfaction with the appliance during eating and oral hygiene practice, duration of usage of the appliance, and interest in using it (P<0.05). The IOTN had no significant correlation with the acceptance questionnaire. Conclusions: Our findings substantiate the role of the GSES, concurrently declining the role of the IOTN in prediction of 10-12-year-old children's acceptance and cooperation in treatment of malocclusion with removable appliances.

scholarly journals Clinical and immunological studies of periodontal inflammatory complications at orthodontic treatment using fixed appliances

2014 ◽  
Vol 95 (1) ◽  
pp. 80-82
Author(s):  
G R Khaliullina ◽  
S L Blashkova
Keyword(s):  
Immune Response ◽  
Orthodontic Treatment ◽  
Inflammatory Diseases ◽  
Periodontal Diseases ◽  
Orthodontic Appliances ◽  
Periodontal Inflammation ◽  
Fixed Orthodontic Appliances ◽  
Fixed Appliances ◽  
Orthodontic Devices

The review of clinical and immunologic studies of periodontal inflammatory diseases is presented. At present, the most effective tools for treatment of malocclusions are fixed orthodontic appliances (dental braces), but the use of fixed appliances complicates the oral hygiene, predisposes to periodontal and gum inflammation. The rate of complications diagnosed during orthodontic treatment stays high. The principles of periodontal inflammatory diseases (gingivitis, periodontitis) treatment are closely related with the causes and mechanisms of periodontal inflammation. Patients who receive orthodontic treatment using braces should be treated as a group with a high risk for inflammatory periodontal diseases. The orthodontic devices stimulate the directed reorganization of periodontal structures achieving optimal aesthetic and functional standards. Physiology of periodontium restructuring is largely determined by the local and general health before, during and after the orthodontic treatment. This article surveys the mechanisms of periodontal damage, highlighting the important role of immune response. So far, only anecdotal descriptions of immune response on the stages of orthodontic treatment are published.

Pilot Workload - A Practitioner's Problem

1981 ◽  
Vol 25 (1) ◽  
pp. 53-53
Author(s):  
Thomas C. Way
Keyword(s):  
Life Cycle Cost ◽  
Operating Costs ◽  
Personnel Cost ◽  
Functional Requirements ◽  
Commercial Aircraft ◽  
Flight Decks ◽  
The One ◽  
Design And Manufacture ◽  
Selection Of

The selection of a new military or commercial aircraft is based, in part, on life-cycle cost or cost-of-ownership. These parameters include both acquisition and operating costs. In the latter, personnel cost is an increasingly important factor. This leads directly to reduction in crew size and automation or reallocation of tasks previously assigned to the now-missing crewmen. It is also common to find that a new aircraft is more complex than the one it replaced. Frequently then, in new aircraft there are fewer crewmen and at least as many functions to be performed as in older aircraft. The challenge to designers of flight decks and avionics suites is to configure the crew station in such a way that required tasks can be accomplished with the allotted crew complement and workload is held within reasonable limits. The purpose of this paper is to outline the role of the human factors practitioner in meeting this challenge, particularly our role in predicting and measuring workload. The process of producing a new system can be broken into (a) statement of functional requirements, (b) design and manufacture, and (c) verification that the design, and finally the system, meets the requirements. In practice, these stages are iterated several times from preliminary design to detailed design to prototype and final production. As good empiricists, we recognize the verification stage to be a test of the hypothesis that the test article meets the requirement. The functional requirements must be stated in quantitative terms and the verification must have all the characteristics of a good experiment.

Arms Production and National Security in Argentina

1980 ◽  
Vol 22 (3) ◽  
pp. 267-288 ◽  
Author(s):  
Edward S. Milenky
Keyword(s):  
Developing Countries ◽  
National Security ◽  
Third World ◽  
International System ◽  
The Third ◽  
Arms Exports ◽  
The Third World ◽  
Design And Manufacture ◽  
Local Input

Since 1950, 28 developing countries have produced tanks, ships, aircraft, other major weapons systems, and infantry and artillery weapons for their own use and for export. Local input has ranged from assembly of imported components to completely indigenous design and manufacture. In 1967 exports from lessdeveloped countries (LDCs) were worth $194 million, as compared to exports from all sources of $201 billion. By 1976 world arms exports had increased to $398 billion and LDC exports to $820 million (ACDA, 1978). Even though the role of lessdeveloped countries in world arms production is still small, it is growing and can be significant in some local and regional contexts.Nascent defense industries in the Third World raise important questions. Terrorists, insurgents, and governments everywhere may find arms more readily available as sources of supply diversify. The spread of weapons manufacture both reflects and promotes the diffusion of power within the international system at large.

scholarly journals Desain Perancangan Alat Guna Pemberi Informasi Kebocoran Gas Metode Fuzzy Melalui SMS Gatway Berbasis Arduino Uno

2020 ◽  
Vol 6 (1) ◽  
pp. 11-14
Author(s):  
Ahmad Fauzi ◽  
Andry Maulana ◽  
Rian Septian Anwar
Keyword(s):  
Natural Resources ◽  
Human Life ◽  
Short Message ◽  
Final Project ◽  
Monitoring Process ◽  
Gas Leak ◽  
Gas Detector ◽  
Arduino Uno ◽  
Design And Manufacture

Abstract  - Natural resources that are beneficial to human life are very much available in this earth, one of the processing of natural resources in the form of gas that is LPG Gas. The role of LPG gas at this time is very important for human life both in the household and in industry. Actual explosion or gas leak can be avoided with a security system and early warning. In this Final Project the authors do the design and manufacture of a gas detector sensor using Arduino Uno MQ-5 sensor. There will be a warning via a short message when the gas condition is detected by the sensor, this tool will send a message to the user's mobile phone that there is a gas leak. Based on the test results, this tool is able to detect LPG gas leak in a room, but it is also capable of sending an sms containing gas leak warning to the user of the tool. As a warning there has been a gas leak in the room or home of the gas user. With the creation of this tool, LPG tube monitoring process can be done easily and safely. And this tool can be developed again using internet-based notifications.

scholarly journals Fake Braces by Quacks In Malaysia: A Major Concern

2020 ◽  
Vol 27 ◽  
pp. 33-40
Author(s):  
Nor Azlida Mohd Nor ◽  
Wan Nurazreena Wan Hassan ◽  
Zamros Yuzadi Mohd Yusof ◽  
Mohd Zambri Mohamed Makhbul
Keyword(s):  
Social Media ◽  
Oral Health ◽  
Clinical Training ◽  
Orthodontic Appliances ◽  
Dental Equipment ◽  
The Social ◽  
Orthodontic Materials ◽  
To Come ◽  
Dental Professionals

Dental quackery has been a problem for decades and is becoming a major concern in many countries, including Malaysia. Recent development of a new service offered by quacks in Malaysia is “fake braces”, which alarmed dental professionals. The fake braces appear similar to the professionally fitted orthodontic appliances comprising of archwires that are secured on brackets by coloured ligatures except they are fitted by unqualified individuals who have no formal clinical training. In addition, the orthodontic materials and dental equipment used for this illegal service were substandard and unregulated. Therefore, such fitted appliances are harmful to the teeth and oral health. Efforts to record the extent of fake braces practice and its oral health consequences have been challenging as they are marketed through the social media, and the victims were either reluctant to come forward or did not know the appropriate channel to file a complaint to the health authority. This paper aims to highlight typical presentation of fake braces, modus operandi of fake braces providers, the harmful effects of fake braces on the patient’s oral health, the role of social media advertising in promoting fake braces, and the impacts to the illegal providers.

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